TCI6614内存问题

请贴出该技术文档看一下。

Multicore Shared Memory Controller (MSMC) for KeyStone Devices User's Guide(sprugw7a).pdf
在这个文档里面的2.2.3 Memory Protection章节，具体内容为：
Segments are always a power-of-2 size and start on a corresponding power-of-2
boundary. Thus, a 4KB segment always starts on a 4K boundary, and a 4GB segment
corresponds to the entire 32-bit address space.

corresponding的意思是起始地址必须是相应Segment size的整数倍吗？

我再确认一下给你答复。

另外你上面提到的不是二次幂是指下文的意思吗?

If an address matches multiple MPAXH registers (overlapping segment descriptors), the highest numbered MPAX register-pair is selected (that is, if the address matches BADDR in MPAXH5 and in MPAXH2, MPAXH5 is selected). Using this priority-based matching behavior, multiple MPAX entries can be programmed for overlapping segments to achieve either non-power-of-two sized segments or subsegments with different memory protection (and/or extension) parameters.

segment size为非二次幂的问题是我之前理解错误，经你指点后，暂时没疑问。我的疑问主要是：
1. corresponding的理解，是不是起始地址必须是相应Segment size的整数倍？
2. 起始地址是否必须为2次幂字节？
3. 如果起始地址不是Segment size的整数倍，会出现什么问题？

是的，起始地址必须是Segment size的整数倍。
不是整数倍的情况，建议可以测试看一下。